Q.8). In a regression calculation, a researcher finds that the explanatory variable x hasmean 100 and SD 10, and the response variable y has mean 250 and SD 40. Theregression equation is found to be y^ = 450and y?2x. What is the correlation between x(a) cannot tell from the information available(b) -0.8(c) -0.5(d) 0.4(e) 0.1Q.10) a) What are the differences between the data and information?b) Explain the differences between the types of Statistics

Answered: Image /qna-images/answer/7d12db9b-c67d-44d6-a83a-08d1218dd82d.jpg

Answered: What is the correlation between x

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Correlations Socioeconom Math ic Status Achievement Socioeconomic Status Pearson Correlation 1 .466 Sig. (2-tailed) <.001 N 999 999 Math Achievement Pearson Correlation .466" Sig. (2-tailed) <.001 999 999 **. Correlation is significant at the 0.01 level (2-tailed).
A correlation coefficient provides two pieces of information about a relationship between two variables. These are -Strength; direction of relationship - Direction, proportions - Direction, which one causes which - Which one causes which, effect size. READ FIRST: Show as much of your work in the text box below as possible, and include the rest in your scratch work. Scratch work supports what you write on this exam form. At the minimum, type your answers to each of the following 5 questions A-E in the text box - do not refer me to your scratch work for the answers. Do show your work (on the exam form or scratch work) for the calculations needed to answer B, so partial credit can be given in the case of a math error that throws off your calculations. The best way to do this is inside tables if possible. Total 10 15 You conduct a survey to find out whether talking on a cell phone during a romantic date bothers people. You want to find out if there is a gender difference on this issue,…
The command aov(x,y) can be used to calculate the correlation coefficient between x and y O True False
When calculating a correlation coefficient between two continuous variables, the scales on which the variables are measured affect the value of the correlation coefficient. True or False
A zero correlation bewteen X and Y is least likely to occur if?
A correlation of r = – 0.95 is stronger than r = + 0.70. true or false?
An r value of .8 indicates a strong positive correlation. True False
Which of the following pairs quantities have a negative correlation? (A) Calorie- intake per day and weight (B) Time spent on studying MMW and final grade in MMW (C) Credit card purchases and savings per month (D) Electric consumption per month and Meralco bill
A negative value for a correlation indicates____ increase in X tend to be accomplished by the increase in Y how much weaker relationship then if the correlation were positive a much stronger relationship than if the correlation were positive increase in X tend to be accomplished by decrease in Y
Which of the following is true of the correlation r? It measures the strength of the straight-line relationship between two quantitative variables. It cannot be greater than 1 or less than 1. A correlation of +1 or –1 can only happen if there is a perfect straight-line relationship between two quantitative variables. Correlation is 0 only when there is no association between the variables. Correlation changes when the explanatory and response variables are switched.
TRUE OR FALSE. a. tau provides a better value of rank correlation as it is more related to rho b. non-parametric tests should always be prioritized no matter the type of variable in research
Refer to the correlation table for this question, The data come from Wave 5 of the Arab Barometer survey in Kuwait and were collected in 2019. In this analysis, we see the correlation between age and years of education (Pearson's R= -0.2729) with the p-value (0.0000) below. Explain what a correlation coefficient is and interpret the one you see here. edu_ye~s age edu_years 1.0000 age -0.2729 1.0000 0.0000

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